INFO: task kworker/1:2:730 blocked for more than 143 seconds.
Not tainted 6.10.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:2 state:D
running task
stack:24272 pid:730 tgid:730 ppid:2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0xca6/0x3170 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6837
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6894
rwsem_down_write_slowpath kernel/locking/rwsem.c:1178 [inline]
__down_write_common+0x950/0x13f0 kernel/locking/rwsem.c:1306
kernfs_add_one+0xb1/0x520 fs/kernfs/dir.c:778
kernfs_create_dir_ns+0xf4/0x150 fs/kernfs/dir.c:1071
sysfs_create_dir_ns+0x13b/0x2b0 fs/sysfs/dir.c:59
create_dir lib/kobject.c:73 [inline]
kobject_add_internal+0x2c8/0x990 lib/kobject.c:240
kobject_add_varg lib/kobject.c:374 [inline]
kobject_add+0x16f/0x240 lib/kobject.c:426
class_dir_create_and_add drivers/base/core.c:3264 [inline]
get_device_parent+0x399/0x4e0 drivers/base/core.c:3315
device_add+0x1ae/0x1a70 drivers/base/core.c:3645
device_create_groups_vargs+0x1f8/0x270 drivers/base/core.c:4413
device_create+0xe9/0x130 drivers/base/core.c:4452
usb_register_dev+0x2ea/0x550 drivers/usb/core/file.c:150
usbtmc_probe+0xdbf/0x1b40 drivers/usb/class/usbtmc.c:2461
usb_probe_interface+0x309/0x9d0 drivers/usb/core/driver.c:399
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:656
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:798
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:956
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3721
usb_set_configuration+0x10cb/0x1c50 drivers/usb/core/message.c:2210
usb_generic_driver_probe+0xb1/0x110 drivers/usb/core/generic.c:254
usb_probe_device+0xec/0x3e0 drivers/usb/core/driver.c:294
call_driver_probe drivers/base/dd.c:578 [inline]
really_probe+0x23e/0xa90 drivers/base/dd.c:656
__driver_probe_device+0x1de/0x440 drivers/base/dd.c:798
driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:828
__device_attach_driver+0x1df/0x310 drivers/base/dd.c:956
bus_for_each_drv+0x157/0x1e0 drivers/base/bus.c:457
__device_attach+0x1e8/0x4b0 drivers/base/dd.c:1028
bus_probe_device+0x17f/0x1c0 drivers/base/bus.c:532
device_add+0x114b/0x1a70 drivers/base/core.c:3721
usb_new_device+0xd90/0x1a10 drivers/usb/core/hub.c:2651
hub_port_connect drivers/usb/core/hub.c:5521 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5661 [inline]
port_event drivers/usb/core/hub.c:5821 [inline]
hub_event+0x2e66/0x4f50 drivers/usb/core/hub.c:5903
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0:
ffffffff886b4620
(
rcu_read_lock
){....}-{1:2}
, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6614
2 locks held by kworker/1:1/43:
#0:
ffff888100080948
(
(wq_completion)events
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1:
ffffc900002d7d80
(free_ipc_work
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
6 locks held by kworker/0:2/50:
#0: ffff8881052ccd48
(
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1:
ffffc90000347d80
((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffff888109f4b190
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849
#3: ffff888101f0c190
(
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
#4:
ffff888101f0e160
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
#5:
ffffffff892e88e8
(
input_mutex
){+.+.}-{3:3}
, at: input_register_device+0xa2b/0x1140 drivers/input/input.c:2463
2 locks held by kworker/u8:5/262:
#0:
ffff888100089148
(
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1:
ffffc900016cfd80
(connector_reaper_work
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
6 locks held by kworker/1:2/730:
#0: ffff8881052ccd48
(
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1:
ffffc900019afd80
((work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2: ffff88810a3ab190
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849
#3: ffff8881042f0190
(
&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
#4:
ffff8881166f8160
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: __device_attach+0x7f/0x4b0 drivers/base/dd.c:1003
#5: ffffffff8912f7b0
(minor_rwsem
){+.+.}-{3:3}
, at: usb_register_dev+0x11c/0x550 drivers/usb/core/file.c:134
2 locks held by kworker/u8:9/1179:
#0:
ffff888100089148
(
(wq_completion)events_unbound
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1: ffffc900021ffd80
((reaper_work).work
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
4 locks held by kworker/u8:10/1231:
#0:
ffff888100aad948
((wq_completion)netns
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1:
ffffc9000220fd80
(
net_cleanup_work
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2:
ffffffff898302d0
(pernet_ops_rwsem
){++++}-{3:3}
, at: cleanup_net+0xbb/0xbf0 net/core/net_namespace.c:594
#3:
ffffffff886bfdb8
(
rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
2 locks held by getty/2460:
#0:
ffff88810771f0a0
(
&tty->ldisc_sem
){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc900000432f0
(
&ldata->atomic_read_lock
){+.+.}-{3:3}
, at: n_tty_read+0xfc8/0x1490 drivers/tty/n_tty.c:2201
4 locks held by udevd/4780:
#0:
ffff88811546ad58
(
&p->lock
){+.+.}-{3:3}
, at: seq_read_iter+0xde/0x12c0 fs/seq_file.c:182
#1:
ffff888116c86488
(&of->mutex
#2
){+.+.}-{3:3}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
#2: ffff88811232f878
(
kn->active
#20){.+.+}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
#3:
ffff888101f0c190
(&dev->mutex
){....}-{3:3}
, at: device_lock_interruptible include/linux/device.h:1014 [inline]
, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
5 locks held by kworker/0:3/4791:
1 lock held by syz-executor.2/4803:
#0:
ffffffff886bfdb8
(rcu_state.exp_mutex
){+.+.}-{3:3}
, at: exp_funnel_lock+0x1a4/0x3b0 kernel/rcu/tree_exp.h:323
5 locks held by kworker/0:4/4808:
3 locks held by kworker/1:3/4809:
#0:
ffff8881052ccd48
((wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x12bf/0x1b60 kernel/workqueue.c:3206
#1:
ffffc9000ab4fd80
(
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x957/0x1b60 kernel/workqueue.c:3207
#2:
ffff888109f92190
(&dev->mutex
){....}-{3:3}
, at: device_lock include/linux/device.h:1009 [inline]
, at: hub_event+0x1be/0x4f50 drivers/usb/core/hub.c:5849
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xf86/0x1240 kernel/hung_task.c:379
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
yealink 2-1:36.0: urb_ctl_callback - urb status -71
NMI backtrace for cpu 0
CPU: 0 PID: 4808 Comm: kworker/0:4 Not tainted 6.10.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_power_efficient gc_worker
RIP: 0010:io_serial_out+0x8f/0xb0 drivers/tty/serial/8250/8250_port.c:413
Code: 48 8d 7d 40 44 89 e1 48 b8 00 00 00 00 00 fc ff df 48 89 fa d3 e3 48 c1 ea 03 80 3c 02 00 75 1c 66 03 5d 40 44 89 e8 89 da ee <5b> 5d 41 5c 41 5d c3 cc cc cc cc e8 51 05 0b ff eb a0 e8 da 05 0b
RSP: 0018:ffffc900000075c0 EFLAGS: 00000002
RAX: 0000000000000020 RBX: 00000000000003f8 RCX: 0000000000000000
RDX: 00000000000003f8 RSI: ffffffff829a9955 RDI: ffffffff8d71fc60
RBP: ffffffff8d71fc20 R08: 0000000000000001 R09: 000000000000001f
R10: 0000000000000000 R11: 0000000000000006 R12: 0000000000000000
R13: 0000000000000020 R14: ffffffff829a98f0 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881f6400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31427000 CR3: 000000000849e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
serial_out drivers/tty/serial/8250/8250.h:122 [inline]
serial8250_console_fifo_write drivers/tty/serial/8250/8250_port.c:3322 [inline]
serial8250_console_write+0xce7/0x1090 drivers/tty/serial/8250/8250_port.c:3393
console_emit_next_record kernel/printk/printk.c:2928 [inline]
console_flush_all+0x53c/0xd70 kernel/printk/printk.c:2994
console_unlock+0xae/0x290 kernel/printk/printk.c:3063
vprintk_emit kernel/printk/printk.c:2345 [inline]
vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2300
dev_vprintk_emit drivers/base/core.c:4951 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4962
__dev_printk+0xf5/0x270 drivers/base/core.c:4974
_dev_err+0xe5/0x120 drivers/base/core.c:5017
urb_ctl_callback+0x1eb/0x2f0 drivers/input/misc/yealink.c:454
__usb_hcd_giveback_urb+0x364/0x5c0 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x396/0x450 drivers/usb/core/hcd.c:1732
dummy_timer+0x17f6/0x3900 drivers/usb/gadget/udc/dummy_hcd.c:1987
__run_hrtimer kernel/time/hrtimer.c:1687 [inline]
__hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1751
hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1813
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
__sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
sysvec_apic_timer_interrupt+0x8b/0xb0 arch/x86/kernel/apic/apic.c:1043
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:227 [inline]
RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:345 [inline]
RIP: 0010:gc_worker+0x2e1/0x1770 net/netfilter/nf_conntrack_core.c:1488
Code: 00 00 48 c7 c7 48 22 be 89 e8 db 40 82 fb 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 49 19 a4 fb 48 85 db 58 0f 85 3d 10 00 00 0a 1e a4 fb eb 07 e8 03 1e a4 fb f3 90 44 8b 35 ea fc 0e 04 31
RSP: 0018:ffffc900043cfbc8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff85af3111
RDX: ffff8881047c9d00 RSI: ffffffff85af3120 RDI: 0000000000000007
RBP: ffff888111000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000003 R12: 0000000000001a7d
R13: dffffc0000000000 R14: 00000000000034f9 R15: 0000000000040000
process_one_work+0x9fb/0x1b60 kernel/workqueue.c:3231
process_scheduled_works kernel/workqueue.c:3312 [inline]
worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244